Help!! 98 Trans Am engine surging
p0102
P0122
P0430
P0102 P
P0122 P
P0155 P
P0430 P
The O2 codes make sense as I have tubes with no cats (need to get the rears tuned out).
Current mods on the car are pretty basic, tubes-straight pipe, lid, and nitrous. 98 T/A with 155k. Thoughts? Any help is appreciated.

